Rotary brush.



E. N. GAUDRON.

ROTARY BRUSH.

APPLIGATION FILED JAN.30.1911.

Y Patented Jan. 5, 1915.

2 SHEETS-SHEET l.

E. N. GAUDRON.

ROTARY BRUSH. v APPLICATION FILED JAN. 30, 1911, 51. Patented Jan.5,1915.

2 SHEETS-SHEET 2.'

THE NORRIS PETERS CG.. PHOTO-LITHO.. WASHINGFON. Dv C.

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@WFD @TAF PATENT FFl@.

EDWARD N. GAUDRON, OF NEWARK, NE'W' JERSEY, ASSIGNOR T0 WILLIAM DIXON, 0F NEWARK, NEW JERSEY.

ROTARY BRUSH.

Specification of Letters Patent.

Patented J an. 5, 31915.

Application filed January 30, 1911. Serial No. 665,635.

To all whom it may concern Be it known that l, EDWARD N. GAUDRON, a citizen of the United States of America, residing in Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Rotary Brushes, of which the following is a specification.

This invention relates to an improved rotary brush for polishing and putting on various finishes to all kinds of metal, the brush being provided with a plurality of swinging knots which are set during the rapid rotation of the brush into radial direction, so as to exert an effective polishing action on the surface of the metallic article to be acted upon; and the invention consists of a rotary brush comprising one or more rows of individually pivoted incased knots, pivotally supported. v

rlhe invention consists further in providing intermediate ring-shaped partitions placed on a cylindrical shell between the heads, for the purpose of securely holding the transverse pivots against strain due to the centrifugal force. y

The invention consists further in the novel individual knots used for the brush.

ln the accompanying drawings, Figure 1 represents a front-elevation of my improved rotary brush: Fig. 2 is a horizontal section on line 2, 2, Fig. l; Fig. 3 is a detailed sideview of one of the knots showing the same mounted in position: Fig. 4 is a detailed plan-view of Fig. 3, Fig. 5 is a detailed vertical section of an individual knot taken on line 5. 5 Fig. 3; Fig. 6 is a sidesview of an individual knot of a different form; Fig. 7 is a side view and Fig. 8 a sectional-view of my improved knot-holder on line 8 8 of Fig. 7, showing the same before being used; Fig. 9 is a front view after it has been pressed into position; Fig. 10 isa side view of the same, and Fig. 1l is a front view similar to Fig. 9, but with a hole punched into it for the pivot-rods on which it is mounted.

Similar letters of reference indicate corresponding parts throughout the several iig-` ures of the drawings.

Referring to the drawings, It represents the disk-shaped heads of my improved rotary brush with swinging knots. The diskshaped heads 7L are provided with interior shoulders, on which rests a cylindrical shell L, the heads and shell being firmly held together by means of screw-bolts ft2, the heads of which are counter-*sunk in one of the heads It, while the opposite threaded ends screw into inteii'iorly-threaded holes of the opposite head I1.. as shown clearlv in Fig. 2. On the circumferences of the heads are supported liked rods a equidistantly from each other, on which are placed a plurality of knots Z1. These knots are formed of strands of wire or other suitable material.

In the form shown in Fig. 5, the strands are held at their' bent portions by means of sheet-metal disks o. connected by thimbles having flanges 712 clenched to the tirst disks.

In theforin shown in Figs. 6 to l1 the central portion of the strands are placed in a casing or knot holder m which in the form shown in F ig. '.7 is of one piece. The strands are placed in this casing and the latter pressed so as to clench the strands therebetween, the casing being substantially of the shape shown inA Fig. 9, with one opening sidewise of the other thus causinav one strand to pass'out of the part m and `the other out of m2, whereupon a central hole m3 is punched in the casing, through which the plvotrod a passes, and causes vthe casing to be pivoted thereto. ln both forms the strands meet and pass each other as shown in Figs. t and 6. 'The advantage of this is to have a tuft or knot without the disadvantagcous feature of crystallization due to the repeated to and fro bending.

In the operation of the brush at speed, the bristles stand radially, due to centrifugal force acting on them. When now the object to be polished or otherwise treated by the brush is pressed into it, the bristles are impeded and held back at their outer ends, and they assume an angle to the radius which constitutes their normal position. Thebristle-casing being of small diameter and light weight, offers little inertia to be overconiein turning it on its pivot. As it extends substantially to equal extent at all sides of the pivot, as shown in the drawings, it is thus balanced, and the centrifugal force of rotation of the brush has no action upon it tending to give it any certain position on its pivot. Thus, the casing offers substantially no resistance to turning on its pivot, duer either to inertia or to centrifugal force.

y Being thus substantiallv free from the action of either, it turns with the greatest ease lll@ under the influence of the bristles when they are displaced from radial position, exerts at such time no bending effect upon the bristles,

and thus the crystallization of the bristles due to bending is avoided and the life of the brush is lengthened. By extending the bristles around the pivot, the innermost portion of the same serves at one side of the pivot to balance the corresponding. portion at the other side, within the casing, thus rendering the casing and contained portion of the tuft a balanced whole. By carrying the bristles around the pivot it is also possible to more easily and cheaply obtain a balanced casing, as described, together with the necessary security of the bristles, and it is possible to make this casing smaller and lighter and therefore with less inertia. y Such construction also renders it possible to carry back the portions of the casing from which the bristles emerge, to the nearest possible point to the pivot itself, thus giving the bristles the largest possible arc for bending, and the greatest available length for wear.

At the intermediate peints on the stationary pivot-rods a are arranged ring-shaped partitions Z which rest on the shell It and which are provided with openings for the pivot-rods to pass through, the partitions surrounding the shell preventing the bending of the pivot-rods under the strain eX-y ertedthereen by the knots during the rapid rotary motion of the brush. ln the brush shown in the drawings, the knots are arranged in groups of six, one group between one head of the brush and the first partition, the second group between the two partitions, and the third group between the second partition and the opposite head of the brush.

' rlhedoubled-up strands of the knots are so arranged that the one-half of each strand is not in the same plane with the other half of the strand, but that the halves extend sidewise'of each other so as to bring the ends of the strands close to butsidewise of` each other at the circumference of the brush.' This isaccomplished by permitting one-half of the tuft of each knot to pass from the ring-shaped device orknot holder or casing at one side of the center-plane of the same'and the other half of the tuft at the other half of the center-plane, as shown clearly in Figs. 4: and 6. The lsidewise position hasl the effect of increasing the polishing efficiency, preventing streaks or railroads and also providing a staggered arrangement. Y

l/Vhen the improved brush is operated, it is rotated at a high speed, say from 2,000 to 2,400 rotations per minute. The knots are thereby moved by centrifugal force on their yCopies of this patent may be obtained for pivot-rods into a position radial to the brush and act by their ends on the surfaces to be polished, exerting a very effective polishing action thereon. As soon as the motion of the brush is interrupted, the knots drop on their pivot-rods, the lower knots hang by gravity in downward direction, while the upper knots drop in opposite directions at both sides of the vertical center-line of the brush, as shown in Fig. l. The entire brush is firmly secured on the rotatory mandrel m5 against a shoulder m ou the same by means of a screw-nut m7 applied to the other threaded end of the mandrel m, as shown in Figs. l and Q. ln place of strands of wire, other material, such as bristles, fibers and the like may be used for the knots.

The rod a is screw-threaded at one end a. and fastened at said end into the flange 71 and has its other end detachably fitting into the other flange. T he object of this is to enable one flange to be readily removed and the knots to be readily got at for removal or replacing while the rods remain supported in the other flange. rl"hus, after one group is removed, the annular partition d may be removed so as to expose the next group and rso on. lThis permits the continuous use of the hub and enables the brush part to be renewed by the replacing of worn tufts with new ones.

A keyway kand guide n is provided to prevent the partitions CZ from being moved by the rotation of the shell, so as to prevent a bending strain on the rods. The advantage of the brush is to permit the use of the same hub for different kinds of knots, also permits their being placed in different positions to suit the immediate purpose.

I do not limit myself to the construction of the brush herein described, as various changes in the construction may be made without departing from the spirit and scope of the invention.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

A rotary brush-body, pivot-pins peripherally arranged around said body, and a plurality of bristle tufts on each pin, each tuft consisting of a flat disk-like casing provided with a central bearing-portion around which the bristles are looped and through which the pivot-pin extends.

In testimony, that I claim the foregoing as my invention, l have signed my name in presence of two subscribing witnesses.

EDWARD N. GAUDRON.

Nitnessesz PAUL Gonrnn, JOHN MURTAGH.

ve cents each, by addressing the Commissioner of Iatents.

Washington, D. C. 

